Lock for loose-leaf binders



May 20, 1930. P. o. UNGER LOCK FOR LOOSE LEAF BINDERS 2 Sheets-Sheet 1 Filed 001;. 13, 1928 I I r 1 v a .Z'A/ws/vroR 2 Sheets-Sheet 2 P. o. UNGER LOOK FOR LOOSE LEAF BINDERS Filed Oct. 15, 1928 May 20, 1930.

I I .ZNYEWT07 By HTTORNEYS.

Patented May 20, 1930 UNITED *s ATEs PATENT or-Pica IIAUL 0. UNG'ER, or SYRACUSE, NEW .YORK, ASSIGNOR TO MCMILLAN-VIBOOKCOMPANY,

or SYIRACU'SZE, NEW Yonx, A CORPORATION OF NEW YORK ' 1 took-r03'Loo'sE-LE r'BiNnEns "A ncati nm crometer1a, 1928. Serial No. 312,258.

- This invention relates to a new, andimproved lock forloose leatbinders and is particularly well adapted for use with the type of binder which isusually called a post binder.

' tIn binders of this type, in whichthe leaves are retained in the binder by virtue of the fact that they are provided with apertures through which the posts of the binder extend itis necessary that SOIHG lIlBELIlS bG pro-- .vided whereby the posts .will be 'releasably held in position in the housings of the binder so that when desired they may be released therefrom to 'permitthe insertion or with- 5 drawal of leaves.

In the use of binders of this type it is frequently desirable to have apositive locking means for the posts so that they may not be withdrawn from the housing except by the use of a key so that it will be impossible for an unauthorized person to change the leaves in the binder. i

It is also desirable in binders of this character to have them so constructedtliat either of the ends of the posts maybe released from their respectivehousings asdesired, and the main object of my invention is to providea V locking means for a post binder which by a single device will lock in position in their housings bothends of the'posts but which is of such a design that when it has been unlocked either ends of the posts may be withdrawn as desired, leaving the opposite ends locked in position. p

Another object of my invetion' is to provide a locking device which may be placed in the l unlocked position by means of a key but which will remain in such unlocked position after the'withdrawal of the key. It is also desirable in binders of this character to provide a means which will automatically lock the posts in position when they have been placed and secured in the housing without the necessity of a further manipulation of the look by meansof the'key, and another object of my invention is to provide a locking means which will automaticallyreturn tothe locked position when the ends of the posts which have been removed froma housingare again 5 placed in position in the housing.

Other objects and advantages relate to the s1ae,shape and arrangement of parts all-as will more fully appear from the following description taken in connectionwith the ac- I companying' drawings, in which Figure l -is a perspective view, partially broken away, of a binder-embodying my de-' vice with the posts released from one housing and with leaves in position onthe posts.

Figure 2 is a perspective -.view, partially broken away, of the back end of a binder in the closed position showing the location of my lock.

Figure 3 is a perspective view of; a pintle carrying slide which is used'to secure the'posts .in a housing.

Figuret is a perspective view of the casing in which mylock is positioned. v

Figure 5 is a perspective View of my lock.

Figure 6 is a section partially broken away,

-on a larger scale on line 66 of Figure 2 showing a-key in position in my lock. Figure 7 is a section on line 7,.7 of Figure 6 showing my lock in the locking position. Figure 8 is a section similar to Figure? showing my lockin the unlocked position.

struction and operationof my'improved lock for loose leaf binders I 'have hereishown a binder 1 having a back member 2 with a cover 3'hin'gedly connected to one longitudinal edge thereof and with a second cover 4 hingedly connected to the otherqlongitudinal edge thereof. Adjacent the hinge 5 which connects cover 3 to back 2 I'provide a housing 6 for a pintlef carrying slide 7 and Figure 9 is a section on'line 99 of 'Fig- 7 ure 8. I

adjacent hinge 8 which connects cover 4 to back 2 I provide a similar housing 9 for a pintle carrying slide 10. Housings 6;.and9 are securedto back 2 by rivets or other con:

venient means, notjshown, and are provided with a plurality, in this case shownas five,- of apertures 11, such apertures being shown only in housing 6,.seeFigure l. oApertures 11 are, provided for the reception of the ends of posts 12, such. posts 12 being provided with i -apertures13 into which pintles 14 on pintle carrying slides 7 and 10 are positioned for the purpose of securing the opposite ends of posts 12 inhousings 6 and 9. a

-. I have shown in Figure 3 the construction of pintle carrying slide-"7 and inasmuch as pintle carrying' sli'de 10 is' similar inconstruction a description of pintlercarr ying slide '7 will also be a' description of p ntle carrying slid 10. 7

shown as five, of pintles '14,,theendsofpin tles 14 being spacedfrom the body of pintle' carrying slide 7 a sufiicient distance to receive between such ends, and such body the ends of-posts 1'2'whenithe pintle carrying 15 and} tongue 16';

slide 7 is in theret'racted position; I provide Von'the opposite edge ofpintle carrying slide 7 v 17a slot 15 havingat one end an outwardly extending tongue 16. The function of slot scribed." Pintle carrying slide 7 provided 1 with a handle or tab-17 extending outwardly y from housing 6 to "facilitate the manual manipulation 0f pintle jcarrying slide When pintle'lcarrying slides 7 and 10 are in the retracted position the apertures 11in housings 16 and 9 will be out of registration intles 14 to permit the entrance there 'with' p inqofthe ends of posts'12; 'When the'pintle carrying slides7 and 10 are then moved inwardly'to the locking position pintles '14 will enter apertures 13 in posts 12 to prevent removal of posts 12 from housings 6 and 9.

In order to preventthe retraction of pintle carrying slides 7 and 10j for the purpose of permitting the removal of posts 12 from either housing 6 or housing 9 I provide a lock -a18. For the purpose of securing lock 18in position in the binder I provide a casing 19 in whichlock 18 ispositioned, Lock 18 is positioned in 'c'asing 19 with its main 'case'20 enclosedin casing 19 and with its lock mechanism retaining barrel 21 extendingoutwardly from casing 19 through an aperturein the back 2 so'that-the outeredge of barrel 21 car- -rying the key. slot 22 is flush with the out sidesurfa'ce of-back2, as may be seen in Fig ure' 2. Easing 19 carrying lockj18 is positioned on the inner surface of back 2 and is secured thereon by screws23 positioned in outwardly extending tabs 24 formed on cas- Jing19. ffIIhe length'of casing 19 is suchthat the" opposite ends'thereof are in registration i cas ing19-b'e1ng open and'in registration with with housings 6 and 9, such opposite ends of apertuLr'es inhousings6 and 9. 'The relation of parts' is such that whjen fpintle carrying slides and 10 are in the normal-orlocked 6 position slot 15, will be in registration with an 'openfendoif casing 19 and asimilar'slot in 7 pintl'e carrying slidelO will bein regi'stra- 'IZIOIYW'ith the opposite open end of "casing 19.

The'relation oif-parts such thatwhen the lockingboltsi 25' and 26 of lock '18 are in'the Pintle carryingslide 7 j carries on one edge a plurality, in this case will I be hereinafter de slides 7 and 10.

' tween,

33 toprevent locking position they willextend outwardly through the-opposite open ends of casing-19 through apertures in housings 6 and9 and into engagement with slots 15 in pintle car- 7 and 10 to prevent the retrac rying slides tion of pintle carrying slides7 and 10 in housings 6 and 9 with the result that pintles '14 cannot be withdrawn-from apertures 13 in posts 12.;

. To permit the closing of the binder with casing 19 in positionron back 2 the leaves; used in thebinder are provided with slots as binder is in the closed position. Asperhaps may best be seen from 25am 26. Bolt 25 has. a rearwardly ex tending lug 27, see Figure 10, and bolt "26 has a"corresponding rearwardly extend ng lug 28 between which is positioned" a coil spring 29to normally force the ends of bolts 25 and 26 outwardly fromcasing 19 'into I housings 6 and 9 respectively and into engagement with slots 15in pintle carrying "Bolt 25, see Figures 7 'lylextending shoulder ing position, permitting the entrance there For the purpose of holding bolts25 and'26 and '8, has a lateral- 30 and bolt. 26 has a corresponding laterally extending shoulder,

31 in spaced relation, .the' distancev therebewhen bolts 25 and 26are in the 1ock- I between of theca'm sh aped end 32 of cylinder "33 rotatably mounted in barrel 21. inn 7 in alinement bolt' 26 is provi'dedwithapin 34 slidably mounted in a slot 35 in bolt 25.

Asperhaps may best'be seen from Figure 6 cylinder 33 is rotatably mounted in barreli21 and is normallyiheld' againstrotation due to the fact that barrel 21 isprovided with a plurality,

tending upwardly into apertures in cylinder the rotation of cylinder, 33 with respect to barrel21. For the purpose offpermitting the rotation of cylinder 33 in .relain this case'shown as four-,of'pin's' 36 backed by springs 37 and ,normallyye'xtion to barrel 21 I provide in each of the apertures in cylinder 33 into which pins 36 nor;

shapedkey 39 is inserted When a properly 38 will be-placed in eninto key slot 22, pins will force thesameinto barrel 21 a sufiicient *gagement with corresponding pins, 136 and distance so that they will be 'outofiengagement with cylinder 33and cylinder; 33 may then be rotated inbarr'el Ql which will cause the camlend 32 ofcyhnder 33 to rotate betweenf shoulders 30 and 31-to force thesame apart into'the position shown in"Figure 8 which will cause bolts 25 and 26 to move out of engagement'with slots 15 in pintle carrying slides 7'and10 l. I L

m ny extend pins 38 or difierent lengths J r V which extend upwardly into key slot 22..

For the. purpose of retaining bolts 25 and 26 in the retracted or'unlocked position when cylinder 33 is then returned to the normal position to permit the withdrawal of key 39,

I provide a pair of pivoted detents 40 and 41adapted to engage shoulders 42 and 43- "25 by a spring 45 interposed between the pivoted end'of detent 40 and aside of casing Detent 41 is similarly pivotally mounted in case 21 by a .pin46. Detent 40 is provided with a stud 47 which extends into a-slot 48 in'detent 40 so that the movement of detent 40 about its pivot 41 towards bolt will-cause a corresponding movement of detent- 41 about its pivot 46 towards bolt 26. Detents '40 and 41 being spring pressed towardslbolts 25 and 26 respectively when such bolts'are'retracted in the manner just described, a shoulder 49 on detent will engage shou'lder42 on bolt 25 and a shoulder 50 ondetent 41 will engage shoulder 43 on bolt 26 torelea-sably hold bolts 25' and 26 in the retracted position.

The length of detent 40 is-such that it extends atall times into casing 6 and into one end of-slo't- 15 in pintle carrying slide-7. Similarly the length of detent 41 is such that it extends at all times into casing 19 and into one end of slot 1.5 in pintle carrying slide 10.

The relation of parts is such that when bolts 25 and 26 are in the retracted or' unlocked position and pintle carrying slide 7 retracted to release pintles 14 from apertures'l'3 in posts 12 to permitJthe removal of posts 12 from housing-6, the tongue :161will contact with the end of detent 40 to force the same outward against the action of spring and release shoulder 42 from shoulder'49 thereby permitting spring 29 to force bolt 25 through casing 19 and againstpin'tle carrying slide 7 so that when pintle ca'rrying'slide 7 is moved inwardly to the locking position bolt 25 will be automatically spring pressed outwardly into slot 15 to lock pintle carrying slide 7 in position. The outward movement of detent 40 from engagement with bolt 25 will cause, through pin 47 and slot 48, tlSll'l'lilar outward movement of detent 41 so that shoulder 43 on bolt 26 will be released from shoulder on detent 41 and bolt 26 will then be spring pressed outwardly into housing 9 v and into engagement with slot 15 in pintle carrying slide 10.

Similarly if the ends of the posts 12 which are in housing 9 are released by the retraction of pintle carrying slide 10 the tongue 16 on pintle carrying slide 10 will engage detent 41 to move the same out of engagement with bolt 26 which will result in the movement of detent 40 out of engagement with bolt 25. That is to say, when the mechanism is in the unlocked position and one end of posts12 are released in the housing in which they by such action be placed in a position for antomatically lockingthe binder when the parts are returned'to the normal position irrespective of which end'of the posts 12 are released.

'For the purpose of limiting the outward movement of bolts 25 and 26 I provideon detent 40 a second shoulder 51 which engages shoulder 42 on bolt 25 when the same is moved outward to the locking position, and I provide a similar shoulder 52 on detent 41 which engages shoulder 43' on 'bolt 26 when the same is moved out-ward to the locking position.

It will be understood that my locking device for loose leaf binders may be changed in order that the same may be adapted to be used with different types of binders without departing from the spirit of my inventlon,

for altho I have shown and described aspecifie structure and' form of part as anjeX'emplification ofmy invention I do not desire to restrlct myself to the exact size, shape or relation of parts as various changes may be made within the scope of the appended claims.

I claim: p Y

1. In a device of the class described,aback member, a pair of opposed covers hingedly connected thereto, a pair of opposed housings secured to the back member, a plurality of leaf retaining posts adapted to have theiropposite ends positioned in the housings, means for securing one end of the posts in-one -housing and additional means for securing the 1:7 means for locking both" such securing means in position, key a'ctuateclmeans for moving such locking means to the unlocked position,

and means for retaining such locking means 1n the unlocked position after the removal of the key. I i

2. In a device of the class described, a back member, opposed covers hingedly connected to'the back member, a pair of opposed hous ings secured to the back'member, ai pintle carrying slide slid'ably mounted in each housin'g, a plurality of lea-f retaining post-s adapted to have their opposite ends positioned in said houslngs in engagement with the pinlocking the pintle carrying slides in the housings, key actuated means for moving such locking means to the unlocked position whereby'the pintle carryingslides are'simultaneously released, and means actuated by the movement of a pintleicarrying slide for causing .thelo'cking means toengage the other pintle carrying slide in the looking position.

3. In a device of the class described, aback were positioned the locking'mechanism will 1 other end of the posts in the other housiI a 7 1 15 tles on the pintle carrying slides, means for p member, opposed covers hingedly connected 7 Q tioned in the housings in engagenient with the .plntles on the P1111310 carry ng slides, means for locking the pintle carrying slid'es'in'the hhouslngs, key actuated means. for s1mu'l taneously withdrawing the locking means from engagementwith thepintles to permit themovement of a selected'pintle in its housing, and automaticmeans for engaging'the locking means with the last named'pintle after a return movement of such pintle in its housing. r 4. In a device oftheclass described, a back member, a pair of opposed covershingedly connected thereto,- a pair'of opposed housings secured to the back member, a plurality of leaf retaining postshavingtheir opposite V ends positioned in theihousings, means for securing one end of the posts in one housing and separate means for securing the opposite ends ofthje .posts int-heother housing,"a key actuated locking means positioned in the back -member for locking both the secur ng means in position, said locking means having a key rece1v1ng slot extendingthrough the back member to the rear face thereof.

v 5. In a device of the class-described, a back member, opposed covers attached to the back member, a pair of opposed housings secured "on the back member, a plurality of leaf retaining posts having their opposite ends positionedjin the housings, meansin eachhousi actuated by the securing means for returning the locking means to the locking position.

i .6. Q In a deviceof the class described, a back member, opposed covers hingedly connected to the back member, opposedhousings se- '7 cured to the back membeiya plurality of leaf retaining posts adapted to have their oppofsite ends positioned in said housings, 'a securing means in each housing adapted toenfor moving the bolts away from the housings, and means for releasably holdingthe bolts.

away from the housings.

8. In a device of the class cured to the back member,'a plurality of leaf site ends positioned in said housings, arsecuring means in each housing adapted to, engage the ends of the posts,'a locking means positioned between said housings and hav- 1 towards opposed housings for engagement with the securing means positioned therein, means for moving the bolts away from the described, aback I 'member, opposed covers hingedly connected to the back member, opposedhousings seretaining posts adapted to have theiroppO- I mg opposed bolts normally spring pressed housings, and means for releasably holding:

the bolts whereby a detent'will engage a bolt, 9. In a device of the classdescribed, a back the bolts away from the housings, said means i l comprising pivoted detents 'operatively'connectedtogether and spring pressed toward 5 member, opposed covers hingedly connected to the back member, opposed housings secured to the back member, a plurality of posts having thei-ropposite ends, positioned in the housings, a pintle carrying slide in each hous ing adapted to engage the ends of the p0sts, a

locking means positioned between said housings and having opposite. bolts normally spring pressed towards opposedhousings and; into engagement with the pintle carr ing' f slides, means for moving the bolts away" rom comprising pivoted detents operativelyicon nected together-and spring pressed towards the bolts whereby a detent will engage a bolt,

the housings, means for releasably holding the bolts away from the housings, said means I and means on the pintle carrying slides for -moving a detentout of engagement with a bolt.

In witness whereof I havehereunto-set my 1 October, 1928'. I

hand this 9th day of gage the ends of the' posts, a locking means 7 positioned between said: housings and having opposed bolts normally spring pressed towards opposed housings for engagement with'the securing meanspositioned therein, and means for movingthe the housings.

bolts away from I 7. In a deviceof theiclass described, aback c member, opposed covers hing'edly connected ,to the back member, opposed housings secured to the .backmember, a plurality of leaf I retaining..postslfadapted to have their opposite ends positioned-insaid housings, a securing meansin each housing adaptedxto-en- V gage the ends of: the posts, a locking means positioned between said housings and having opposed bolts normallyspring pressed. to- V 'wards opposed housings for engagement with the securing means positioned therein, means 

